# Noctua Build - fans aren't spinning **URL:** \ **Category:** Hardware\ **Tags:** fans\ **Created:** [October 4, 2024, 9:59pm UTC](https://forum.45homelab.com/t/noctua-build-fans-arent-spinning/1745 "2024-10-04T21:59:06Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![JusttheFNG](https://forum.45homelab.com/letter_avatar_proxy/v4/letter/j/71e660/32.png) [@JusttheFNG](https://forum.45homelab.com/u/JusttheFNG)\ **Post date:** [October 4, 2024, 9:59pm UTC](https://forum.45homelab.com/t/noctua-build-fans-arent-spinning/1745/1 "2024-10-04T21:59:06Z")
Greetings - I purchased the HL15 with the NOCTUA upgrade installed. I’ve got the CPU/mobo/ram/HD installed… I turned on the system and I can get to the mobo’s bios, but the 6 noctua fans are not spinning. I see the fan speed controller - the green and yellow leds are off, and the dial does nothing. I’ve pressed the little button on the controller and no luck. What am I missing? I didn’t see any instructions in the boxes. All connections from the PSU to the fan power board (mounted to the side of the chassis) are snug. I do see 3x2pin fan connectors coming off of that but they aren’t plugged into anything. I’m thinking they are redundant, but I’m not sure. The cable going to the fan speed controller is also snug. There’s an open port on the opposite side, but I’m not sure if that should be plugged to anything. Apologies on the over abundance of caution here. It’s been awhile since I’ve built a PC, and I want to make sure I don’t fry something by mistake. ---
**Author:** ![JusttheFNG](https://forum.45homelab.com/letter_avatar_proxy/v4/letter/j/71e660/32.png) [@JusttheFNG](https://forum.45homelab.com/u/JusttheFNG)\ **Post date:** [October 4, 2024, 10:20pm UTC](https://forum.45homelab.com/t/noctua-build-fans-arent-spinning/1745/2 "2024-10-04T22:20:54Z")
so sorry. I found the 1 pager in the box, which included a [QR code for this guide](https://45homelab.com/pdf/Noctua%20Fan%20Kit.pdf). Page 10 answered my problem. Back to the build!